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Vanadium battery as the current strong momentum of development of green energy storage battery, has broad prospects for development in large-scale energy storage. However, in the process of vanadium battery research, the research of electrode materials is one of the key constraints. The electrode material must have the characteristics of stability, performance in strong acid medium and low resistivity, good conductivity, high mechanical strength, high electrochemical activity, and electrode materials at present is not up to the above requirements, can not meet the actual needs of the long-term work of vanadium battery. Carbon materials due to its good conductivity and corrosion resistance, many researchers of various carbon materials by charge discharge experiments in vanadium electrolyte, found that graphite rods, graphite…
Carbon is one of the most common natural elements, carbon compounds bond and structure is extremely rich, expanded graphite is a kind of new carbon material. In early 1860s, Brodie natural graphite with sulfuric acid and nitric acid and other chemical reagents were found after heating, expanded graphite, but its application in only after death the beginning. Since then, many countries have launched the expansion of research and development of graphite, made a major scientific breakthrough. Expanded graphite is a kind of porous material like prepared from natural flake graphite, so called graphite. Natural flake graphite is a layered crystal, each layer of carbon atoms. With a strong covalent bond formed macromolecular reticular plane, and between the layers with weak…
The wear resistant graphite sealing ring has the following obvious advantages: The graphite seal ring no radiation no pollution. The flexible graphite does not contain harmful ingredients to the human body, but asbestos products has the radiation hazards, and it will pollute the environment. The graphite sealing ring has heat resistance property. The flexible graphite strengthened composite gasket can enhance high temperature of 1650 DEG C, even if the chemical equipment melted, it is still safe and sound. But the crystallization water inside the asbestos products will be broken down at 500 degrees and it will be efflorescence powder and loss of efficacy. The graphite sealing ring for a wide range of application. The flexible graphite sealing ring in addition…
